Is there a way to quickly find out the area of a exterior surface?

Let's say a 9' long x 8' high, and 3" thick wall. If I want to to the take off of this wall, it keeps giving me the area of every face of this wall but in reality I should only be getting 72' SF.

Any idea how to achieve that or is it even possible? I can do this quite easily in other softwares, but I still can't figure out how to do that in Revit.

Thanks in advance.